ΔE 10.0, fair: the same colour family, but not a straight swap. Argonaut Skin is a little lighter, more saturated, warmer than Ammo Pouch Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Argonaut Skin is a little lighter, more saturated, warmer than Ammo Pouch Brown.
The same difference applies the other way round: Ammo Pouch Brown is a little darker, more muted, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Ammo Pouch Brown on the colour wheel See Argonaut Skin on the colour wheel
All matches: Ammo Pouch Brown equivalents · Argonaut Skin equivalents